Porsche Cayenne have water drain design issue. When raining or wash the car, the water drain clog will make water flood the inside of the vehicles, and damage the wires under the driver's side and passenger side. This is a common issue, Porsche know this, but not fix it.

- Union City, CA, USA

Parked vehicle and attempted to turn off got a red alert steering faulty, everything locked up including transmission and window switches..had to be flat bedded to a Porsche dealership took a week for them to figure out, had to replace steering column.concern is what would have happened if driving at the time..got no answer

- Sequim, WA, USA

A start ignition won't start and I have to plug the key in order to started the vehicle

- Hialeah, FL, USA

The car cut out as I was crossing a intersection while in motion leaving the car disabled in the middle of a busy intersection, luckily other drivers saw the problem and went around me. All warning lights came on including the ignition lock fault. I turned it off and after 2 minutes it restarted. The next day the car would not start, the ignition lock fault came on, and then all of the other warning lights came on and the engine would not turn over and was locked in park. This happened once before in Feb 2017 when a corroded wires were found in a main bundle of wires in the drivers footwell. There was no water on that area and nor has there been any water on the car or the footwell. I have had weathertech mats in place hte whole time to prevent that. This is a safety concern that it could go dead in the middle of operation not just a starting issue. I have reviewed technical bulletin NHTSA 10056337 which does not provide any explanation for implying that the lack of feedback has lead to the factory not knowing to fix the problem. Porsche need to fix this problem the improperly spliced wires and the bundle need to be retrofitted in a way to protect them from ongoing corrosion that in my case happened happened twice the second time on 6,000 miles after the last in a car that is kept in a garage.

- Rochester, MN, USA

The contact owns a 2008 Porsche Cayenne. While driving 35 mph, the vehicle stalled without warning. It was diagnosed that the air conditioner condensation drain line was plugged, which caused the electrical issue. The manufacturer was not made aware of the issue. The failure mileage was 72,340.

- Montclair, CA, USA

Have experienced ongoing electrical system mirror problems, with my 2008 Porsche Cayenne, where the outside mirrors moved on their own while driving and parking. First experienced this electrical system mirror problem on (3/23/09) at 12,391 miles, as this car was taken to same dealership where I had purchased it (inskip penske Porsche in warwick, ri (12) separate times for unsuccessful attempts at repair. The repair invoices are available for the following visits: 3-23-09 = 12,391 / 3-31-09 = 12,592 / 4-2-09 = 12,992 / 9-13-10 = 25,668 / 9-28-2010 = 26,186 / 12-16-10 = 28,179 / 8-24-11 = 38,186 / 9-13-11 = 38,664 / 9-30-11 = 39,249 / 12-19-12 = 47,715 / 1-24-13 = 47,973 / 3-7-13 = 48,199. Purchased the car brand new on (2/4/08) with only 24 miles on the odometer. Computer control unit was replaced at least 10 separate times, as this car may have had software virus & or an electrical shortage. The dealership seems not to not know how to properly program this car, as they claimed that the car was ready to be picked up on (3/7/13) after being in their shop for 37 days since the 11th visit beginning on (1/24/13). Less than 12 miles later, I had to return the car back to the dealer for the 12th time on (3/7/13), because the spare key which they had programmed we suspect may have had old software which corrupted the computer system. This problem again caused the mirrors to move in all kind of different directions, thus causing a major safety issue when driving or operating the vehicle. They finally ordered another computer replacement & 2 new keys which they programmed successfully without further problems. Prior to this 12th repair, I came close to being involved in at least 4 near mis accidents, as cars were not visible in my blind spot, especially when the mirrors move on their own. Have gone through two arbitrations. Updated 03/15/13

- Warwick, RI, USA

S10 direct reply letter to the secretary from regarding having problems with his 2008 Porsche Cayenne. The consumer stated he experienced numerous safety problems with the electrical system and brakes. The consumer stated he filed two separate arbitration against the dealer and the manufacturer. The first arbitration case was settled in 2009, with the expectation all of the problems with the vehicle, current, past and present would be properly identified and resolved. Since the initial arbitration case, the consumer had to take the vehicle back to the dealer 11 times for the same electrical/software problem. The on-going problem uncontrollably affected the proper positioning of the outside mirrors and the overall safety aspect when operating the vehicle. The dealer replaced the onboard computer control module seven times, as their field technical expert suspected there was an unidentifiable electrical shortage or a computer related software virus somewhere within the electrical system. The consumer believed the dealer had no idea how to resolve the problem.

- Warwick, RI, USA